At that evelvation your numbers are very strong. At 8,000 ft DAs a stock M3 would be doing 14-second quarter mile times and trapping at maybe 100mph.
Daily: 2015 991 Turbo S White with Gloss Black Aerokit / GIAC
Track/Airstrip #1: 2013 e92 M3 DCT / ESS VT2 650 S/C / Akrapovic Evolution / StopTech BBK
Track/Airstrip #2: 2011 997.2 Turbo S PDK / GIAC FBO / GMG suspension build
Beaterz: 2013 X5 3.5 Sport, 2015 Wrangler Unlimited
IG: longboarder949; YouTube: https://www.youtube.com/channel/UCT1...eoFBszPIK0gf9w